DE102007059185B4 - Method and device for measuring the straightness of long products - Google Patents
Method and device for measuring the straightness of long products Download PDFInfo
- Publication number
- DE102007059185B4 DE102007059185B4 DE102007059185A DE102007059185A DE102007059185B4 DE 102007059185 B4 DE102007059185 B4 DE 102007059185B4 DE 102007059185 A DE102007059185 A DE 102007059185A DE 102007059185 A DE102007059185 A DE 102007059185A DE 102007059185 B4 DE102007059185 B4 DE 102007059185B4
- Authority
- DE
- Germany
- Prior art keywords
- long product
- measuring device
- product
- straightness
- long
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000004519 manufacturing process Methods 0.000 claims abstract description 8
- 210000002435 tendon Anatomy 0.000 claims abstract description 5
- 239000000969 carrier Substances 0.000 claims abstract 3
- 238000005259 measurement Methods 0.000 claims description 13
- 239000000463 material Substances 0.000 claims description 6
- 230000005489 elastic deformation Effects 0.000 claims description 5
- 238000005457 optimization Methods 0.000 claims description 3
- 238000005096 rolling process Methods 0.000 claims description 2
- 238000000418 atomic force spectrum Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000009191 jumping Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/22—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring angles or tapers; for testing the alignment of axes
- G01B21/24—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring angles or tapers; for testing the alignment of axes for testing alignment of axes
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B13/00—Measuring arrangements characterised by the use of fluids
- G01B13/16—Measuring arrangements characterised by the use of fluids for measuring contours or curvatures
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/16—Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/24—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/30—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring roughness or irregularity of surfaces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B38/00—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Length Measuring Devices By Optical Means (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
Abstract
Verfahren zur Messung der Geradheit von Langprodukten (P), wie gewalzten Schienen, Trägern, Stäben oder dergleichen, im Produktionsfluss, mittels einer in der Produktionsanlage angeordneten Messeinrichtung (M), deren Messwerte einem Zentralrechner zugeführt werden, dadurch gekennzeichnet, daß das die Messeinrichtung (M) durchlaufende Langprodukt (P) zwischen zwei voneinander beabstandeten, dem Langprodukt (P) Auflager (I, II) bereitstellenden Bereichen der Messeinrichtung (M) definiert eingespannt wird, wobei mittels der Auslenkung (S) des Langproduktes (P) in der freien, ungestützten Einspannlänge (L) zwischen den Auflagern (I, II) und einer ideellen, die ausgelenkte Einspannlänge überbrückenden Sehne (q) die Geradheit des Langproduktes (P) automatisch bestimmt wird.Method for measuring the straightness of long products (P), such as rolled rails, carriers, rods or the like, in the production flow, by means of a measuring device (M) arranged in the production plant, the measured values of which are fed to a central computer, characterized in that the measuring device ( M) defined longitudinal product (P) between two spaced apart, the long product (P) supports (I, II) providing areas of the measuring device (M) defined clamped, wherein by means of the deflection (S) of the long product (P) in the free, unsupported clamping length (L) between the supports (I, II) and an ideal, the deflected chuck bridging tendon (q) the straightness of the long product (P) is automatically determined.
Description
Die Erfindung betrifft ein Verfahren und eine Vorrichtung zur Messung der Geradheit von Langprodukten mit den in den Oberbegriffen der beiden unabhängigen Ansprüche angegebenen Merkmalen. Ein solches Verfahren beziehungsweise eine solche Vorrichtung sind aus der
Bei einer weiteren bekannten Methode wird die Geradheit eines Profils bestimmt, indem z. B. ein Träger auf den Flansch gestellt und mit einem angelegten Draht die Sehne gemessen wird. Eine solche manuelle Messung erfordert einen hohen Zeitaufwand und führt damit zu Produktionseinbussen.In another known method, the straightness of a profile is determined by z. B. a carrier is placed on the flange and the tendon is measured with an applied wire. Such a manual measurement requires a lot of time and thus leads to production losses.
Zur automatischen Messung und Bestimmung der Geradheit von Schienen und Profilen am durchlaufenden Produkt ist es in der Praxis bekannt, Lasermeßgeräte bzw. -verfahren einzusetzen. Dazu wird die Schiene mit ca. 1 m/s über einen Rollgang bewegt und der Abstand zwischen Laserkopf und Schiene gemessen, wodurch sich die Welligkeit (Geradheit auf kleinen Längenskalen, z. B. 1 m) bestimmen läßt. Das Meßprinzip beruht auf einer Positionsmessung gleichzeitig an mehreren Punkten in Bezug auf eine feste Referenz (optisches Lineal). Das Lasermeßverfahren wird allerdings bei höheren Geschwindigkeiten, beispielsweise 10 m/s, problematisch, weil die Eigenbewegung des Profils bzw. Langprodukts, wie Springen auf dem Rollgang oder Schwingungen, als unvermeidliche Störgröße das Meßergebnis verfälscht.For the automatic measurement and determination of the straightness of rails and profiles on the passing product, it is known in practice to use laser measuring devices or methods. For this purpose, the rail is moved at approx. 1 m / s over a roller table and the distance between laser head and rail is measured, whereby the waviness (straightness on small length scales, eg 1 m) can be determined. The measurement principle is based on a position measurement simultaneously at several points with respect to a fixed reference (optical ruler). The Lasermeßverfahren, however, at higher speeds, for example, 10 m / s, problematic, because the proper motion of the profile or long product, such as jumping on the roller table or vibrations, as an unavoidable interference falsifies the measurement result.
Beim Stand der Technik nach der
Der Erfindung liegt daher die Aufgabe zugrunde, ein Verfahren und eine Vorrichtung der gattungsgemäßen Art zu schaffen, mit denen sich die Geradheit eines Langprodukts im Durchlauf ohne die genannten Nachteile und ohne Störungen des Fertigungsprozesses ermitteln läßt.The invention is therefore based on the object to provide a method and an apparatus of the generic type with which the straightness of a long product can be determined in the run without the mentioned disadvantages and without disturbances of the manufacturing process.
Diese Aufgabe wird mit den in den kennzeichnenden Teilen des unabhängigen Verfahrensanspruchs und des unabhängigen Vorrichtungsanspruchs angegebenen Merkmalen gelöst. Der Erfindung liegt hierbei die Überlegung zugrunde, durch die für den Durchlauf unschädliche Einspannung, wie vergleichbar bei einem beidseitig festgelegten Träger, des Langprodukts definierte Verhältnisse bzw. einen definierten Zustand über eine freie, ungestützte Einspannlänge des Langprodukts zu schaffen und dort über eine Abstandsmessung, z. B. mittels Lasermeßgeräten, die Gradheit zu bestimmen. Hierbei wird die Krümmung bzw. Auslenkung des Langprodukts aufgrund seines Eigengewichts und die angelegte Sehne als Referenz in Bezug genommen.This object is achieved with the features indicated in the characterizing parts of the independent method claim and the independent device claim. The invention is based on the idea to create by the harmless for the passage clamping, as comparable to a carrier defined on both sides of the long product defined conditions or a defined state over a free, unsupported clamping length of the long product and there via a distance measurement, z , B. using laser gauges to determine the degree. Here, the curvature or deflection of the long product due to its own weight and the applied chord is referred to as a reference.
Die Messung kann vorteilhaft in verschiedenen Krümmungsebenen erfolgen. Optional läßt sich auch die Verdrehung des Langproduktes durch eine gezielte elastische Torsion ermitteln. Zur weiteren Optimierung bei der Bestimmung der Sehne kann vorteilhaft das Flächenträgheitsmoment des Langproduktes durch Messung der Produktgeometrie, z. B. die Flanschbreite, einbezogen werden.The measurement can advantageously take place in different planes of curvature. Optionally, the rotation of the long product can be determined by a targeted elastic torsion. For further optimization in the determination of the tendon may advantageously be the area moment of inertia of the long product by measuring the product geometry, for. As the flange width are included.
Nach einer bevorzugten Ausführung der Erfindung wird das Langprodukt über seine freie, ungestützte Einspannlänge durch eine Kraft beaufschlagt und mit gezielter Auslenkung elastisch verformt. Der Einfluss der Störgrößen, insbesondere von Schwingungen, wird hierdurch deutlich verringert und das Meßergebnis viel genauer im Vergleich zu einer Auslenkung bzw. Durchbiegung aufgrund allein des Eigengewichts, das dann vorteilhaft bei der zur Auslenkung führenden Kraft berücksichtigt und kompensiert wird. Die Auslenkung kann durch ein Lasermeßgerät ermittelt werden.According to a preferred embodiment of the invention, the long product is acted upon by its free, unsupported clamping length by a force and elastically deformed with targeted deflection. The influence of the disturbance variables, in particular of vibrations, is thereby significantly reduced and the measurement result much more accurate compared to a deflection or deflection due solely to the dead weight, which is then advantageously taken into account and compensated in the force leading to the deflection. The deflection can be determined by a laser measuring device.
Somit ist selbst bei hohen Durchlaufgeschwindigkeiten, ohne daß Eigenbewegungen des Langprodukts das Meßergebnis verfälschen können, eine kontinuierliche Kontrolle der Geradheit und Dokumentation, zum Qualitätsmanagement, möglich. Außerdem kann eine direkte Rückkopplung der Messergebnisse auf einen Walz- und insbesondere Richtprozeß in einer Rollenrichtmaschine erfolgen.Thus, even at high throughput speeds, without proper movement of the long product can distort the measurement result, a continuous control of straightness and documentation, quality management, possible. In addition, a direct feedback of the measurement results to a rolling and in particular straightening process can be carried out in a roller straightening machine.
Bei einer erfindungsgemäßen Vorrichtung ist dem durchlaufenden Langprodukt in der Messeinheit ein erster Spannbereich und davon beabstandet in Materialflussrichtung ein zweiter Einspannbereich zugeordnet, zwischen denen ein freier Längenabschnitt ohne Abstützung des Langprodukts ausgebildet ist. Es läßt sich somit trotz der ungestützten Einspannlänge des Langprodukts eine definierte Lagerung erreichen.In a device according to the invention, the continuous long product in the measuring unit is assigned a first clamping region and spaced therefrom in the material flow direction a second clamping region, between which a free longitudinal section is formed without supporting the long product. It can thus achieve a defined storage despite the unsupported clamping length of the long product.
Eine vorteilhafte Ausgestaltung der Erfindung sieht vor, daß in dem freien, ungestützten Längenabschnitt ein das Langprodukt zu einer Richtung hin gezielt mit elastischer Umformung auslenkendes Kraftbeaufschlagungsmittel, vorzugsweise ein Hydraulikzylinder, vorgesehen ist. Die Messgenauigkeit wird auf diese Weise durch Überlagerung und Kompensation des auslenkenden Eigengewichts des Langprodukts verbessert.An advantageous embodiment of the invention provides that in the free, unsupported longitudinal portion of a long product to a direction specifically with elastic deformation deflecting Kraftbeaufschlagungsmittel, preferably a hydraulic cylinder, is provided. The measurement accuracy is improved in this way by superposition and compensation of the deflecting weight of the long product.
Nach einer bevorzugten Ausführung der Erfindung weist jeder Einspannbereich mindestens ein Rollenpaar auf, das aus einer oberen und einer unteren Rolle besteht, zwischen denen das Langprodukt hindurchläuft, wobei das Kraftbeaufschlagungsmittel mit einer in das Langprodukt eintauchenden Arbeitsrolle verbunden ist. Die Rollenpaare gewährleisten sowohl den kontinuierlichen, schnellen Durchlauf des Langprodukts als auch dessen sichere Einspannung, wobei die Rollen vorteilhaft gegen das durchlaufende Langprodukt anstellbar sind. According to a preferred embodiment of the invention, each clamping region comprises at least one pair of rollers consisting of an upper and a lower roller, between which the long product passes, wherein the force-applying means is connected to a working roller immersed in the long product. The pairs of rollers ensure both the continuous, fast passage of the long product and its secure clamping, the rollers are advantageous against the running long product unemployable.
Weitere Merkmale und Einzelheiten der Erfindung ergeben sich aus den Patentansprüchen und der nachfolgenden Beschreibung von in den Zeichnungen schematisch dargestellten Ausführungsbeispielen der Erfindung: Es zeigen:Further features and details of the invention will become apparent from the claims and the following description of schematically illustrated in the drawings embodiments of the invention:
Die Messeinrichtung M nach
Es werden für die jeweilige momentane Messung definierte Verhältnisse wie bei einem gemäß
Die
In
BezugszeichenlisteLIST OF REFERENCE NUMBERS
- 11
- untere Rollelower roll
- 22
- obere Rolleupper roll
- 33
- untere Rollelower roll
- 44
- obere Rolleupper roll
- 55
- Arbeitsrollework role
- 66
- obere Rolleupper roll
- 77
- untere Rollelower roll
- 88th
- obere Rolleupper roll
- 99
- untere Rollelower roll
- FF
- Kraftforce
- KK
- Kraftbeaufschlagungsmittelforce loading
- LL
- ungestützte Einspannlängeunsupported clamping length
- MM
- Messeinrichtungmeasuring device
- MFMF
- Materialflussmaterial flow
- PP
- Langproduktbeading
- RR
- Richtmaschinestraightener
- RARA
- RollenanstellmittelRollenanstellmittel
- RRRR
- Richtrolle der RichtmaschineStraightening roller of straightening machine
- SS
- Auslenkungdeflection
- TT
- Teilungdivision
- Sehnetendon
- I, III, II
- Einspannbereich/AuflagerClamping / support
Claims (16)
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102007059185A DE102007059185B4 (en) | 2007-01-15 | 2007-12-06 | Method and device for measuring the straightness of long products |
ES08000140.7T ES2627425T3 (en) | 2007-01-15 | 2008-01-05 | Procedure for measuring the linearity of elongated products |
EP08000140.7A EP1944570B1 (en) | 2007-01-15 | 2008-01-05 | Method for measuring the straightness of elongated products |
US12/008,360 US8230709B2 (en) | 2007-01-15 | 2008-01-10 | Measuring straightness of an elongated rolled workpiece |
JP2008004517A JP5274847B2 (en) | 2007-01-15 | 2008-01-11 | Method and apparatus for measuring the straightness of long products |
RU2008101548/02A RU2357819C1 (en) | 2007-01-15 | 2008-01-14 | Method and device for measurement of straightness of long length items |
IN120CH2008 IN2008CH00120A (en) | 2007-12-06 | 2008-01-14 | |
CN200810003182.2A CN101226055B (en) | 2007-01-15 | 2008-01-15 | Method and device for recording the straightness of elongated products |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102007002982.0 | 2007-01-15 | ||
DE102007002982 | 2007-01-15 | ||
DE102007059185A DE102007059185B4 (en) | 2007-01-15 | 2007-12-06 | Method and device for measuring the straightness of long products |
Publications (2)
Publication Number | Publication Date |
---|---|
DE102007059185A1 DE102007059185A1 (en) | 2008-07-31 |
DE102007059185B4 true DE102007059185B4 (en) | 2011-04-07 |
Family
ID=39190293
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102007059185A Expired - Fee Related DE102007059185B4 (en) | 2007-01-15 | 2007-12-06 | Method and device for measuring the straightness of long products |
Country Status (7)
Country | Link |
---|---|
US (1) | US8230709B2 (en) |
EP (1) | EP1944570B1 (en) |
JP (1) | JP5274847B2 (en) |
CN (1) | CN101226055B (en) |
DE (1) | DE102007059185B4 (en) |
ES (1) | ES2627425T3 (en) |
RU (1) | RU2357819C1 (en) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT509831B1 (en) * | 2010-04-30 | 2012-03-15 | Siemens Vai Metals Tech Gmbh | METHOD AND DEVICE FOR MINIMIZING THE STRAP TRAIN OF A ROLL |
CN103658232B (en) * | 2012-08-30 | 2015-06-24 | 攀钢集团攀枝花钢钒有限公司 | Method for measuring actual rolling reduction of upper roll of roll straightener |
AT513245B1 (en) * | 2012-12-11 | 2014-03-15 | Siemens Vai Metals Tech Gmbh | Flatness measurement and measurement of residual stresses for a metallic flat product |
CN103322968B (en) * | 2013-07-05 | 2016-06-29 | 武汉钢铁(集团)公司 | The measuring method of roll and strip steel 3 d surface topography functional character parameter and device |
US9138792B2 (en) * | 2013-09-06 | 2015-09-22 | The Boeing Company | Automated tube straightening apparatus |
CN104668311B (en) * | 2014-11-04 | 2017-01-25 | 南京钢铁股份有限公司 | Method for online measurement of length of steel plate by hot straightening machine |
ITBS20150085A1 (en) | 2015-05-15 | 2016-11-15 | Q Tech S R L | METHOD AND DEVICE FOR MEASURING THE STRAIGHTNESS ERROR OF BARS AND PIPES |
CN104907359B (en) * | 2015-06-26 | 2016-11-16 | 天津商业大学 | A kind of adjustable stock workpiece Linearity surveying frock |
JP7238405B2 (en) * | 2016-12-06 | 2023-03-14 | 日本電気硝子株式会社 | Quality inspection method for strip glass film |
IT201900006816A1 (en) * | 2019-05-14 | 2020-11-14 | Schnell Spa | METHOD AND EQUIPMENT FOR DETECTING THE CONFIGURATION OF ELEMENTS OF ELONGATED SHEET |
DE102022210294A1 (en) | 2022-09-28 | 2024-03-28 | Felsomat Gmbh & Co. Kg | Method and measuring station for determining the straightness of bar conductors |
DE102022210293A1 (en) | 2022-09-28 | 2024-03-28 | Felsomat Gmbh & Co. Kg | Method and manufacturing system for producing rod ladders |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0935120A2 (en) * | 1998-01-19 | 1999-08-11 | Institut für Verformungskunde und Hüttenmaschinen | Procedure and device to determine the bend of longitudinal matter |
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US3496744A (en) * | 1966-02-05 | 1970-02-24 | Sumitomo Light Metal Ind | Method and apparatus for controlling the contours of rolling mill rolls to obtain metal sheet or strip of superior flatness |
JPS4818868B1 (en) * | 1969-06-21 | 1973-06-08 | ||
JPS5927245B2 (en) * | 1976-08-20 | 1984-07-04 | 住友金属工業株式会社 | Control method for roller straightening machine |
JPS57158507A (en) | 1981-03-27 | 1982-09-30 | Nippon Kokan Kk <Nkk> | Curvature measuring method of shape steel and its device |
JPS5927245A (en) | 1982-08-05 | 1984-02-13 | Fujitsu Ltd | Apparatus for detecting concentration of gas |
US4589082A (en) * | 1983-01-17 | 1986-05-13 | Westinghouse Electric Corp. | Nuclear fuel rod straightness measuring system and method |
JPS6137322A (en) * | 1984-07-30 | 1986-02-22 | Ishikawajima Harima Heavy Ind Co Ltd | Roller leveller |
JPH0246918A (en) | 1988-08-04 | 1990-02-16 | Showa Alum Corp | Automatic control method for rolling foil or the like |
JPH0422810A (en) | 1990-05-17 | 1992-01-27 | Showa Alum Corp | Measuring method for flatness of thin plate in plate rolling |
JPH087063B2 (en) | 1992-06-16 | 1996-01-29 | 株式会社神戸製鋼所 | Flatness measuring device |
JPH07239223A (en) | 1994-02-25 | 1995-09-12 | Toshiba Corp | Flatness measuring device for rolled plate |
JP3156747B2 (en) | 1995-07-13 | 2001-04-16 | サンコール株式会社 | Bar material straightness correction device |
DE19543605A1 (en) * | 1995-11-23 | 1997-05-28 | Schloemann Siemag Ag | Process for cross-sectional control of rolling stock |
DE19725726C2 (en) | 1997-06-18 | 2000-08-03 | Bwg Bergwerk Walzwerk | Method for measuring flatness of strips, in particular metal strips |
DE19729438C2 (en) | 1997-07-09 | 2000-01-13 | Witels App Masch Albert Gmbh | Device for determining the modulus of elasticity and / or the yield strength or an elastic limit in the case of non-proportional expansion and / or the strengthening module and / or parameters of the alternating loads and / or a predetermined bending of a finite straightening good, such as sheets, strips, profiles, pipes and in particular of wire and multi-wire products |
GB2334094B (en) | 1998-02-05 | 2002-08-14 | Howden Aircontrol Ltd | Air environment control systems |
FR2815705B1 (en) | 2000-10-20 | 2003-04-18 | Val Clecim | PLANAR DETECTION METHOD AND DEVICE |
JP4559907B2 (en) | 2005-05-09 | 2010-10-13 | 新日本製鐵株式会社 | Measuring device for bending of rod-shaped body |
-
2007
- 2007-12-06 DE DE102007059185A patent/DE102007059185B4/en not_active Expired - Fee Related
-
2008
- 2008-01-05 EP EP08000140.7A patent/EP1944570B1/en not_active Not-in-force
- 2008-01-05 ES ES08000140.7T patent/ES2627425T3/en active Active
- 2008-01-10 US US12/008,360 patent/US8230709B2/en not_active Expired - Fee Related
- 2008-01-11 JP JP2008004517A patent/JP5274847B2/en not_active Expired - Fee Related
- 2008-01-14 RU RU2008101548/02A patent/RU2357819C1/en not_active IP Right Cessation
- 2008-01-15 CN CN200810003182.2A patent/CN101226055B/en not_active Expired - Fee Related
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0935120A2 (en) * | 1998-01-19 | 1999-08-11 | Institut für Verformungskunde und Hüttenmaschinen | Procedure and device to determine the bend of longitudinal matter |
Also Published As
Publication number | Publication date |
---|---|
JP2008170442A (en) | 2008-07-24 |
US8230709B2 (en) | 2012-07-31 |
ES2627425T3 (en) | 2017-07-28 |
US20090044583A1 (en) | 2009-02-19 |
CN101226055A (en) | 2008-07-23 |
CN101226055B (en) | 2013-06-12 |
RU2357819C1 (en) | 2009-06-10 |
EP1944570A1 (en) | 2008-07-16 |
EP1944570B1 (en) | 2017-03-08 |
JP5274847B2 (en) | 2013-08-28 |
DE102007059185A1 (en) | 2008-07-31 |
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